[CALCITE-406] Add tile and measure elements to lattice model element

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.9.1-incubating
• Assignee: Julian Hyde
• Reporter: Julian Hyde
• Created: 12/Sep/14 19:10
• Updated: 18/Oct/14 22:36
• Resolved: 16/Sep/14 00:41

Description

Add tile and measure elements to the lattice model element. This will allow the model author to define tiles (materialized aggregates) as part of the lattice definition.

Each tile has a list of dimensions (each of which is a column of the lattice) and a list of measures (each of which is an aggregate function applied to zero or more arguments, each of which is a column of the lattice).

The lattice has a default list of measures; this is used by any tiles that do not specify a measure list explicitly.

Issue Links

• relates to: CALCITE-410 Allow lattice tiles to satisfy a query by rolling up